Bump Grunt JSCS checker to 0.4.1

Old version had a hard peerDependency that caused npm install to fail during CI. The lastest uses a more flexible version mapping.

package.json

@@ -40,7 +40,7 @@
     "grunt-contrib-jshint": "~0.6.4",
     "grunt-contrib-uglify": "~0.2.4",
     "grunt-contrib-watch": "~0.5.3",
-    "grunt-jscs-checker": "~0.3.2"
+    "grunt-jscs-checker": "~0.4.1"
   },
   "maintainers": [
     {